Slitting and rewinding machine



J, A. CAMERON AND G. B. BIRCH* SLITTING AND REWINDING MACHINE.

APPLiCATlON HLED FEB. 5. 1917.

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nnirn .JAMES A. CAMERON AND GUS'lik1 BIRGER BRCH, OF BROOKLYN, NEW YGRK, ASSIGNOBS TO CAMERON MACHINE COMPANY, OF BROGKLYN, NEW YORK, A. CORPORATION OF' NEW YORK,

SLITTING AND REWINDING MACHNE.

Application filed February 5, 1917. Serial No. l,

i! 0 all ywhom it may concern.'

Bc it known that ive, JAMES rfi. CAMERON and Gns'rar l5, Brucin citizens of the United States, and residents of the borough of Brooklyn. in the county of Kings, city and State of New York, have invented certain. new` and useful improvements in Slit- Speccation of Letters Patent.

ting and Rewinding Machines,of which the v following is a specification,

This invention relates to slitting and re- Winding machines and in particular to the slitting mechanism designed for use in connection vwith such machines.

In the art of slitting and rewinding sheet material, such. as pa'per, fabric, metal foils,

and the like, one of the more successful types of machines embodies the mechanism shown generally in `Patent No. 1,076,189, in which a pair of reivinding rolls in direct peripheral and supporting engagement with the rewound coils, cooperate With a third roll engaging the upper periphery of the coils to rotate. the coils and thereby perform the rewinding operation. n the machine shown in the patent referred te, one of the rewinding rolls on which the reivound coils are supported is utilized also as a cutter roll andgforthis purpose is provided with a cylindrical shellv having a glass-hard surface against Ywhich are pressed a series of'cutting disks which operate to slit an interposed moving Web in a manner Well-known in the art. Because 'of the great difficulty of uniformly and properly hardening the surface of a large cylinder, it has been found advisable to forni the cylindrical shell of' the cutter roll in sections, as has been pointed out in the aforesaid patenty and, further- 'n'1 ore, to restrict far as possible the diameter' of the ciitting-i'oll. Vlfith the development of the art however, a point has been reached which a cutter roll having a diameter small enough to comply with the limitations of the hardening .process cannot be' used as a supporting roll for the reivound coils because of its tendency to bend under theweight of the coils and thereby interfere with both the slittin,f T and the rewinding operations. An object of this invention is to provide rewinding rolls whichivill ademately support Vthe rewound coils without bending; and to secure this result Without increasing the diameter of the cutter roll.

Another feature of the invention is to pro iatcnted Sept, 2, 1i919 vide means for preventing the ilexure of the cutter roll. l

lll/lith these and other objects in view the` invention consists principally in removing the cutter roll from coil supporting' position and in providinga pair of coil supporting rewinding rolls of such relatively large diameter that they can perform the function Of supporting the reu'ound coils Without bending. The relatively slender cutter roll may be provided with a backing roll adapted to prevent bending of the cutter roll as shown in Figs. l and 2 of the drawing or the backing roll may be omitted as shown in Fig. 3. Other features of the invention will' be referred to as the description proceeds.

ln the accompanying 'drawing there is illustrated a preferred embodiment of the invention, but it is to be understood that the invention may be carried out by other embodiments and byinechanism, differing from,

that selectedfor illu'stratioln ln the drawings, in Which .like reference characters are used to designate like parts,

Figure l is a diagrammatic view of a device showing a preferred embodiment of the invention in ivhich the cutter roll is mounted beneath the reivinding` rolls and provided with a thrust receiving roller.

Fig. 2 a diagrammatic view ef a modifi ation in which the cutter roll is mounted in a location spaced apart from the4 rewinding rolls.

Fig. 3 is a view of a modification similar to that shown in Fig. l with the thrust roll omitted.

In the particular embodiments of the invention disclosed there is shown a slitting and rewinding machine of the general type in which a pair of surface reu'inding rolls support the rewound coils and cooperate with a third roll engaging the upper surface of the coils to perform the winding operation. As has already been pointed out a wclldnown method of performing the slittingoperation consists in using one of the coil supporting reivinding rolls to serve as la cutter roll With which a series of cutting disks cooperated to slit the web. In this 'particular instance coil supporting rewinding rolls of relatively large diameter are eln- CII cutter roll is provided which serves as a guide and cutter roll and takes no Ypart in the coil supporting function. In the preferred embodiment of the invention the cutter roll` is mounted beneath the rewinding rolls and, in order to prevent iexure thereof, a backing roll is interposed between the rewinding and the cutter rolls in direct engagement with the periplieries thereof. In another modification the cutter roll is located at a point separated from the rewinding rolls and is in this location also provided with a backing roll which will overcome any tendency that the cutter roll might have to bend -'under the strain of the cutting operation. In still another modification a cutter roll is mounted beneath the rewinding rolls andthe backing roller is omitted.

In the embodiment of the invention shown in Fig. 1 of the drawing, the rewinding mechanism comprises the surface rewinding rolls 1 and ,2 Awhich are constructed with diameters-of such a size that they will form an adequate and rigid support for the rewound. coils 3,- and that the rewindingroll 2 will withstand the strain produced by the pull on the web t as it passes around the rewinding roll 2 and is fed directly to the periphery of the rewound coils 3. The rewind shaft 5 forms a core for the rewound coils and is so mounted in the machine that Y it is free to -rise as the diameter of the coils increases. As will be evident, the coil sup-v porting rolls 1 and 2 are rotated in the same direction, .and preferably cooperate with a driven rewinding roller 6 resting on the top of the rewound coils 3 to rotate the interposed coils. by 'their peripheral engagement therewith. The' roller 6 is pref# erably mounted in carriages, one of ywhich is indicated at 7, that are adapted tomove upwardly along'the vertical guide members 8in accordance with the increase in size of the rewound coils. This construction follows in a general way the construction shown in the patent to which reference has already been made, as well' as that disclosed in application Serial No. 135,947, filed Becemb'er 9, 1916.

4 Instead, however, of making the cutter rollv serve also as one of the supporting rolls 1 orh as in the atent, provision` has been ma e for mounting this roll, because of the desi ability of restricting its diameter within certain llimits,l in a location where it will not be put to the strain of supporting the weight of the rewound coils. Accordingly, in the embodiment of4 the invention shown in Figs. 1 and 3 of the drawing, the cutter roll 9, -which as can`be seen, is of relatively small diameter as compared with t the large rewinding rolls 1 and 2,'hasv been mounted beneath and equi-distant'from therewinding rolls 1 and 2.

It hasbeen found when .operating on cer,-

1 and 2 andthe cutter roll 9 as lshown in" Fig. 1. The backing roller 11 is of such a size that it makes direct contact with the peripheries of the three rolls and thus forms a butler connection that will resist the in ward thrust of any roll of the group toward. the others. It will be'seen that by this construction the upward bending of the cutter roll 9 due to the pressure of the web l is etfectually eliminated and a rigid backing member is thereby presented to the action of one or more cutting disks such as are indicated at 12. I It will be obvious that a construction such as isslrown in Fig. 3, with the thrustr roller 11 omitted, is within the scope of the in-y vention.r In such a construction the downwardly actin force of gravity on the cutter roll woulc be sufficient to' counteract the upward web pressure exerted when web rolls of moderate weight and size are being operated upon.

While'the most important feature of the structural arrangement shown in Fig. 1 is the prevention of bending of the cutter roll 9, it will bevevident that the same construcvtion tends also to resist any tendency to bend that might occur in the case of the rewinding roll 2. The general triangular arrangement of the rewinding rolls 1 vand 2 and the ci1ttei':.'ol 9, supplemented by the c action of the"interposed backing roller 11,

is such Athat any given roll resists inward pressure with what is practically the resist- -in Fig. 1 is again' employed, but the cutter roll is shown in aposi-tion spaced away from the rewinding rolls 1 and 2. The backing roller 11 is retained and is shown as having a larger diameter than in Fig.y 1 since in this'c'ase the backing roll must be self-supporting andis 'not supplemented by the rewinding rolls 1 and 2. This construction while lacking the compact, thrust resisting arrangement shown in Fig. 2, is more easily accessible than the corresponding structure A' andimay be more suitable for certain classes of'work.

. For' insuring the complete severance of. the web and separating the strips a separator prising: a pair of surface rewinding rolls of relatively large diau'ieter for supporting the rewound coils, a cutter roll ot relatively small diameter mounted beneath and intermediate the rewinding rolls, means for callsing the web to engage one of the rewinding rollsybeiore it passes to the cutter roll, means for rotating the cutter roll at a higher pe- 'riplieral speed than the speed of travel of the web, and slitting means engaging with the cutter roll.

5). A slitting and rewinding machine cornprising.; a pair of surface rewinding rolls of relatively large diameter for supportingI the rewound coils, a cutter roll of relatively small diameter mounted beneath and intermediate the rewinding rolls, means for causing the web to engage one, of the rewinding rolls before it passes to the cutter roll, means for rotating said last-named rewindin roll and said cutter roll at a higher perip eral speed than the speed of travel of the web, anlrl slitting means engaging with the cutter ro 10. A slitting and rewinding machine comprising: a pair of surface rewinding rolls on which the rewound coils are supported, a cutter roll mounted beneath the rewinding rolls, one of Said rewinding rolls being driven at a higher peripheral lspeed vthan the other, means for causing the web vto engage the rewinding roll having the higher peripheral speed, thence'pass to the gf-.cutter' roll, and fromfthe cutter roll pass around the other rewinding roll to the'rewound coils, 'and 'slitting means engaging with the-cutter roll. f

11. A slitting and rewinding machine comprising: a pair of surface rewinding rolls on which the rewound coils are su a. cutter roll mounted beneath t e rewinding rolls, said cutter roll and one of said rewinding-rolls being driven at a higher speed than the other rewinding roll, means for causing the web to engage the rewinding roll having the higher speed, thencepass to the cutter roll, fand from the .cutter iill' pass around the other rewinding roll to theV rewound coils, and slitting means engaging with the cutterroll.

1'2. A slitting and rewinding machine comprisin'g: a pair ofl surface rewinding rolls spaced apart, located in the samehorizontal plane and rotating in the same direc# tion, a rewinding shaft, for the rewound Ina-' -terial, above the rewinding rolls and inter' t mediate the latter, a cutting roll below the rewinding rolls and intermediate the same,

a cutter coacting with thecutting roll, and means for rotatlng the cutting roll and the` rewinding rolls in the same direction.

' 13. A slitting and rewinding machine comprising: a pair of surface rewinding rolls rotating in the same direction and adapted to support the rewound coils, a cutter roll mounted beneath the rewlndmgrolls and intermediate the same, means for driving one of the rewinding rolls at a certain peripheral speed, means for driving the other rewinding roll at a higher peripheral speed, and slitting means engaging with the cutter roll.

la. A slitting and rewinding machine comprising: a pair of surface rewinding rolls rotating in the same direction and adapted to support the reWound coils, a cutes y ter roll mounted beneath the rewinding rolls l and intermedlate the same, means for driving one of the rewinding rolls ata certain peripheral speed to determine the speed of travel of the web, means for driving the cut# ter roll ata higher peripheral speed than the speed of travel of the web, and slitting means engaging with the cutter roll.

15. slitting and rewinding machine comprising: a pair of surface rewinding rolls on which the rewound coils are supi ported, a cutter roll mounted beneath the rewinding rolls, a backing roll interposed between the cutter roll and the rewinding roll.

18.. A slitting and rewinding machine comprising: rewinding mechanism, a cutter roll arranged to alter the course of travel of the web, a backing member in engagef ment With the cutter roll, and slitting means engaging with the cutter roll.

1 rolls, and slitting means engaging the cutter Signed at Brooklyn in the county. of'

Kings and vState of New Yorkjthis 2nd day of February, A. D. 1917. JAMES A. CAMERON. GUSTAF' BIRGER BIRCH. 

